New COVID-19 Study Reveals Major Vitamin D Deficiency—But There’s a Solution – mindbodygreen.com

Sufficient blood levels of 25(OH)D, the measure of vitamin D status, are considered to be greater than or equal to 20-30 ng/mL. Why a range? The National Academy of Medicine chose a conservative cutpoint at 20 ng/mL, while the Endocrine Society says 30 ng/mL. To put this in context, research estimates that 23% of the US population over the age of one have 25(OH)D levels less than 20 ng/ml, and 41% of American adults are below 30 ng/ml. These figures consider all vitamin D inputs, sunshine and diet.
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